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Solar flares in November 1991
C-class197
M-class27
X-class2
LargestX1.51991-11-15
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| November 1990 | 323 | 25 | 0 | M7.5 |
| November 1991 | 197 | 27 | 2 | X1.5 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1991-11-15 | 22:34 | 22:38 | 43 | X1.5 | S13W19 | 6919 |
| 1991-11-09 | 15:32 | 15:50 | 97 | X1.1 | S16W57 | 6906 |
| 1991-11-02 | 06:27 | 06:47 | 60 | M9.1 | S13W61 | 6891 |
| 1991-11-10 | 20:16 | 20:16 | 27 | M7.9 | S15E43 | 6919 |
| 1991-11-10 | 01:14 | 01:38 | 50 | M6.9 | S11E58 | 6919 |
| 1991-11-30 | 03:44 | 03:49 | 7 | M5.7 | – | 6946 |
| 1991-11-02 | 16:19 | 16:35 | 110 | M4.8 | S07W69 | 6891 |
| 1991-11-06 | 04:46 | 04:48 | 24 | M4.7 | S14W20 | 6906 |
| 1991-11-08 | 17:11 | 17:12 | 16 | M4.2 | S15W42 | 6906 |
| 1991-11-20 | 00:54 | 01:00 | 78 | M4.0 | S14E58 | 6929 |
| 1991-11-02 | 11:27 | 11:51 | 38 | M3.8 | N15W49 | 6893 |
| 1991-11-04 | 22:52 | 23:23 | 58 | M3.4 | – | – |
| 1991-11-06 | 22:51 | 23:56 | 109 | M2.8 | S13W31 | 6906 |
| 1991-11-10 | 06:44 | 06:52 | 47 | M2.2 | S14E53 | 6919 |
| 1991-11-17 | 18:31 | 18:33 | 15 | M1.9 | S12E78 | 6929 |
All times UTC. Until June 2017 classes are NOAA's reports of the time (GOES-15 and earlier included a 0.7 scaling factor); later classes come from calibrated GOES-16/18 data, so the same flare reads about 1.4× larger. Do not compare the two periods directly.
About this page
226 flares of class C or larger in November 1991; by M/X count it ranks 107 of 565 months.